Self-heating sad-iron.



0. SPAHR. SELF HEATING SAD IRON. APPLICATION FILED N0v.19, 1912.

Patenti@ Dec. 9, 1913.

L T E E H S s T E E H S 2 w/mfssfs @A MW O. SPAHR.

SELF HEATING SAD IRON.

APILIGATION FILED 11011.19, 1912.

Patented Dec. 9, 1913.

2 SHEETS-SHEET 2.

WITNESSES ATTORNEYS UNITED STATES PATEN T OFFICE.

OTTO SPAHR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO STRAUSE GAS IRON CO., OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

SELF-HEATING SAD-IRON.

Specification of Letters Patent.

Patented Dee. 9,1913.

Application led November 19, 1912. Serial No. 732,220.

To all whom t may concern:

Be it known that l, OTTO Srxnn, a citizen of the United States, and a resident of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Self-Heating Sad-Irons, of which the following is a specification.

My invention relates to self-heating sad irons and more particularly to large irons for tailors use in which gas or a similar fuel is the heat producing medium and has for an object to improve and simplify the general construction thereof.

Another object of my improvement is to construct the iron in such a manner as to secure perfect combustion and in consequence a maximum amount of heat with a minimum expenditure of fuel.

My invention further contemplates the provision of a burner adapted when in operation to exert its heating influence directly on substantially the entire inner surface of the bottom of said iron whereby the heating of said iron is quickly accomplished and maintained.

Other objects of my improvement will appear from the description hereinafter and the features of novelty will be pointed out in the appended claims.

Reference is to be had to the accompanying drawings in which- Figure 1 is a longitudinal sectional view of my improved iron; Fig. Q is a cross-section thereon on the line Q-2 of Fig. 1; Fig. 3 is a plan view of the iron with the cover removed; Fig. 4 is a side elevation of the body thereof; Fig. 5 a horizontal section taken substantially on the line 5r5 of Fig. 4; Fig. 6 is an inverted plan view of the burner; and Figs. 7 and 8 are end views thereof looking in opposite directions.

In the drawings 10 represents the hollow body of the iron which may be of.any customary shape and is provided with a projection 1l extending upwardly from the front end or apex thereof and preferably undercut to form a shoulder 1Q, as shown best in Fig. 1. Projections 13 also extend upwardly from the body at the corners formed by the side and rear walls thereof, while a projection 14 extends upwardly from said rear wall at a point intermediate of the projections 13. A cover 15 in the assembled condition of the iron rests upon the projections 11 and 13 and with the upper edges of the side walls of the body forms openings 16 extending lengthwise thereof for the purpose to be more fully described hereinafter. The cover 15 is shaped to correspond to the shape of the body when viewed in plan and is secured to said body preferably so as to be movable relatively thereto to uncover the same and thus expose the interior of the body when desired. As an example of how this result may be accomplished the said cover 15 may be provided at its front end or apex with a downwardly projecting hook 17 and at its rear portion may be formed with a preferably open ended slot 18. Thus in the assembled condition of the iron or in other words when the cover 15 is in its operative position to cover the body, the hook 17 extends beneath the projection 11 and engages the shoulder 12 and the slot 1S is aositioned above the intermediate projection 14. This projection 14 is provided with a screwthreaded aperture 19 arranged to accommodate a locking means which may be in the nature of a screw Q0 extending through the slot 18 and having preferably either a knurled head 2l as shown in Fig. 1 or a lever as shown in Fig. 4, the head Q1 or the lever 22 both being adapted to bear upon the cover l5 at opposite sides of the slot 1S, as the screw 20 is screwed into the aperture 19, and lock the cover in position against movement relatively to the body 10. A handle 23 of any suitable kind and customary construction for manipulating the iron and moving thc cover is secured to said cover 15 in any convenient manner as for instance by means of screws 24. These same screws 24 may be used for the purpose of removably supporting a weight of any convenient construction as for instance a plate Q5, so that the effective weight of the iron may be increased or diminished by substituting plates of differentweights or b v omitting the plate entirely. ln order that the handle '23 may be firmly held when no plate is used and also to securely maintain any plate in position I prefer to provide sleeves QG and nuts 27 on each screw 24. vWhen a plate or other weight is used these sleeves 2G will bear against the same and against the cover 15 and in the absence of a weight will engage the nuts 27 and the cover and in either case will maintain the screws 24 rigidly in position after the nuts 27 have been screwed home. The plate 25 instead of being located as shown may be positioned against the cover 15 or in other words between said cover and the sleeves 26. The body of the iron is provided with preferably continuous channels 28 located in the bottom thereof and extending parallel with each other lengthwise of the iron and which may have their front ends connected with each other as shown best in Fig. 5, although this latter is not absolutely necessary. Air inlet openings 29 are located along opposite sides of said body and extend through the bottom thereof so as to communicate with said channels 28 and the outside atmosphere as illustrated in Figs. 2 and 5. A rib 30 projects upwardly from the bottom of the iron and extends lengthwise thereof between the channels 28 from a point near the rear to a point near the front of said iron.

In the construction as illustrated the burner comprises parallel tubular members 31 which are connected at their front ends as shown if the channels 28 are similarly connected, and are preferably constructed to follow the line of said channels when viewed in plan as shown best in Fig. 6. At their rear ends the said members 31 are connected by means of a transverse tubular member 32 with which a tube 33 is in communication; said tube 33 being provided with the usual air inlets 34 and nipple 35 for the accommodation of the customary preferably flexible tube adapted for connection with a source of fuel supply. The said burner is provided with ribs 36 extending lengthwise of each member 31 and depending therefrom along a central line, which ribs 36 have their front ends spaced to form a recess 37 and are connected at their rear ends by means of a transverse rib 38 depending from the transverse member 32. The burner is further provided with a plurality of jet apertures 39 arranged in series on opposite sides of each rib 3G and similar apertures 4() located at the front of thel transverse rib 38, said apertures 39 extending downwardly along lines diverging toward the bottom of the iron while the apertures 40 project at an angle toward said bottom when the burner is in operative position. If desired the burner may also have similar apertures at the front endf thereof particularly when the members 31 are connected at this point some of said last named apertures, as shown, being-inclined toward the bottom while others extend at substantially right angles thereto. IVhen in position in the iron the burner extends through an opening 49 in the rear wall of the body with the transverse tubular member 32 located therein and the tube 33 projecting outside of the body and preferably extending at an angle to the vertical as shown best in Figs. l, 3, 6, 7 and 8. In this operative position of the burner a projection 41 fixed on the front end thereof is positioned in a recess 42 formed in the front portion of the iron body, as illustrated in Fig. 1, the coperation between said projection 41 and recess 42 serving to prevent any movement of the burner in a direction transverse to its length. In order that the burner may be fixed in the body against movement in the direction of its length I prefer to have the aperture 19 extend completely through the projection 14, so that the lower end of said aperture communicates with the opening 40 and to locate a short screw 43 in said aperture 19 as shown best in Fig. l. This short screw 43 is arranged to be screwed down upon the transverse member 32 and to exert a pressure thereon to prevent lengthwise movement of the burner relatively to the iron and is of such a length as not to interfere with the operation of the screw 20. Vith this arrangement when the screw 20 is in position in said aperture 19 the short screw 43 is completely hidden from view and tampering therewith is thus prevented and guarded against. In placing the burner in position in the iron the front end thereof is first introduced through the opening 40 with the rib 30 located in the recess 37. The

said burner 1s now moved inwardly, the recess 37 and rib 30 guiding it during this movement until the projection 41 is positioned in the recess 42 in which position the transverse tubular member 32 will be located in the opening 40 beneath the aperture 19 and the transverse rib 38 will be in close proximity to a shoulder 44 formed in the bottom of the iron. If the short screw 43 is now screwed home the lower end thereof will bear upon the said transverse member 32 and will fix the said burner against movementI relatively to the iron, it being understood that the screw 20 has first been completely removed from the aperture 19 to make the screw 43 accessible. In this operative position of the burner the ribs 36 extend partly into the channels 28 and substantially divide the same lengthwise while the rib 30 extends upwardly into the free space between the tubular members 31 of the burner as shown in Fig. 2.

lVhen it is desired to use the iron the usual flexible tube is first connected with a source of fuel supply after which the cover 15 is moved relatively to the body to expose the interior thereof and permit a, match, taper or other igniting medium to be used for igniting the fuel issuing from the jet apertures 39 and 40 and any others with which the burner may be provided. The resulting flames from the jet apertures 39 will extend from the members 31 in opposite directions toward the bottom and the flames from the apertures 40 will be also directed toward said bottom, substantially the entire inner shown and described may be made within surface of which will thus be engaged by the the scope of the claims without departing flames so that the bottom of the iron will from the spirit of my invention. become quickly heated. lVhen the burner I claim: is in active operation air will pass through l. In a self heating sad iron, a hollow body the inlets '29 to the channels 28 and beneath having air inlets and a burner located in and through thc flames. During OpQIalOB said body above the bottom thereof and comtlio air entering the channels Q8 will be diprising spaced substantially parallel meinvided by the ribs 3G and will be caused to bers adapted for connection with a source pass partly thro-ugh the outer series and of fuel supply and provided with jet aperl tures directed toward said bottom, said air partly tnrough the inner series of llames as will be clearly apparent from an inspection inlets extending through said bottom from opposite sides of said body and having their of F ig. 2. The products of combustion from the outer series of flames will pass out diexit ends located substantially beneath said burner members.

rectly through the openings 16, while the products of combustion from the inner Series Q In a self heating sad iron, a hollow will first pass through the free space bebody provided with parallel channels in its bottom and having air inlets extending tween the burner members 31 and then out through said openings, a substantially perthrough said bottom from opposite sides of feet Combustion being SGCUlGd With th@ the body and communicating Ywith said chanabove arrangement which results in a maxinels, and u burner located in Said body und mum amount of heat with a minimum exadapted for commotion with a Source 0f fuel supply, said burner comprising spaced subpenditure of fuel. During the operation of the burner the rib 3() in addition to its other Stamiauy parallel members having jet apertures directed toward said bottom, each of functions prevents the air from passing directly from one side of the iron t0 the other Said blu-nel members being located above and in registry with a channel.

but directs it upwardly from opposite sides ln a self heating sad iron, a hollow body provided with parallel channels in its through the inner series of flames. The

channels Q8 are particularly adapted for the bottom and air inlets communicating therewith, and a burner comprising spaced parallel members connected with a source of fuel purpose of receiving air from the outside through the inlets 2t) at points beneath the supply and located in said body above and in registry with said channel and having )et flames so that said outside air is forced to pass through the said flames and promote apertures directed toward said bottom an ribs depending from each of said burner the combustion to the highest degree.

If from any cause the burner should beineinbers and extending into said channels whereby the incoming air is divided.

come defective the same may be easily removed by first removing the screw Q0 an then releasing the screw 4?) to relieve the 4l. ln a self heating sad iron, a hollow body provided with parallel channels in its bottom and having air inlets extending transversely through said bottom and communipressure. on the transverse member 3Q. It

eating with said channels, a burner locate is to be understood that in the form of my invention as illustrated, which is only an in said body and adapted for connection with a source of fuel supply, said burner example, the cover may be moved relatively to the body by simply releasing the screw Q0 and then moving the cover to the rear t0 release the hook 1T from the shoulder 12 comprising spaced substantially parallel members having jet apertures directed toward said bottoni. each of said burner members being located above and in registry and that in the illustrated example it is unnecessary to completely remove the screw 2O with a channel and a rib extending upwardly from said bottom between said channels an when it is intended to uncover the body. By

providing the free space between the burner members ill all flames are subjected directly to the influence of the incoming outside air and a perfect circulation of air within all intermediate of said burner members.

parts of the body is secured. By having the ln a self heating sad iron, a hollow body tube arranged at an angle to the vertical provided with paiallcl channels in its botthe flexible tube connecting it with a source tom and air inlets communicating therewith,

of fuel supply is maintained out of the way and a burner comprising spaced parallel of the user when the iron is in operation. members connected with a source of fuel The shape of the channels 2S may be supply and located in said body above and changed to meet specific requirements and in registry with said channels and having as found necessary. It is preferable that iet apertures directed toward said bottom,

the outlet ends of the air passages Q9 be ribs depending from each of said burner located beneath the flames and any structure members and extending into said channels securing this result may be substituted for and a single rib extending upwardly from the one shown. the said bottom intermediate of said paral- Various changes in the specific forni lel members.

- )ro eetinvf u )wardly G. In a self heating sad iron, a hollow body provided with parallel channels in its bottom and air inlets communicating therewith and having a recess at its front end, a rib from said bottom intermediate of said channels, a burner comprising spaced parallel members connected with a source of fuel supply and located in said body above and in registry with said channels and having jet apertures directed toward said body, a projection on said burner arranged to enter said recess to support said burner, ribs depending from each of said burner members and extending into said channels and means for removably securing said burner in said body.

Copies of this patent mav be obtained for five cents each, by

7. In a self heating sad iron, a hollow bod a burner located therein adapted for ,connection with a source of fuel supply and provided with parallel series of j et apertures directed toward the bottoni of said body and a rib depending from said burner and ei'- tending lengthwise thereof between said parallel series of jet openings.

In testimony whereof, I have hereunto set my hand in the presence of two subscribing witnesses.

OTTO SPAHR.

addressing the Commissioner of Patents,

Washington, D. C. X 

